Faith-As-Righteousness
Faith itself counted as righteousness, not the imputation of Christ's obedience — the Arminian/Socinian position rejected by XI.1.
This is a contested or rejected alternative.
The Westminster baseline on Active-Obedience Imputation is Active-And-Passive-Obedience-Imputed. Personas and schools listed below hold this alternative position instead — either because they argued for it at the Assembly (like the Erastians on polity) or because they represent a receiving tradition that departed from the Standards on this point.
Cruxes on this attribute
The Assembly navigated 1 crux that bear directly on Active-Obedience Imputation.
Other positions on Active-Obedience Imputation
Active-And-Passive-Obedience-Imputed WCF
Both Christ's obedience and his sacrifice — his whole righteousness — are imputed to the justified believer (WCF VIII.5; XI.1, 3).
Passive-Only
Only Christ's suffering of the curse is imputed; his active obedience is required for his own person — Piscator's denial, rejected by the Assembly.